Electrical insulator.



A. B. SIMPSON ELECTRICAL INSULATOR.

APPUCATION FILED MAYG. 1916 1 81,678. Patented 0m. 15, 1918..

ALEXANDER B. SIMPSON, OF =TEF-$IEY CITY,

ELECTRICAL IN s ecification of Letters Patent.

Patented @c't. 31

Original application filed April 21, 1914, Serial No. 833,454. Divided and this application riled may 6, Serial No. 95,908.

To all whom it may concern:

Be it known that I, ALEXANDER B. SIMP- SON, a citizen of the United States, and resident of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements inv Electrical Insulators, of which the follow ing is a specification.

he main object of my invention is to simplify, cheapen, and expedite the means of insulating the joint interconnecting a plurality of Wires in electrical contact.

Iminsulatingthe joints of electrical wires, the time required. tonvrap the insulating tapes around the joint is very great, and the soiling of the hands and surrounding ob jects are often matters of serious expense.

My improvement consists in the peculiar construction of a hollow tube insulator having a screw to clamp the insulation of the roup of insulated wires which have been interconnected. In order that my invention may be fully understood, I shall first describe in detail the mode in which it is carried into practice, and then distinctly claim the invention.

Reference is made to the accompanying drawings forming part of this specification, in which like parts are designated by the same letters or numerals in all the figures.

Figure 1 is a sectional view of my insulator. Fig. 2 is a view of the same with a group of wires. Fig. 3 is a view of the Wire regeiving end opening.

11 tube having one end closed u designated by b, of porcelain, vulcanized her, or other hard insulation substance, and the screw of corresponding insulation substance, designated by letter a, is threaded and fits loosely in the threaded hole designated by letter 0, to form a space between the closed end of the tube and the screw, for the joint. To increase the scope of the clamping screw (5, to follow any variation in the bulk of the insulations to be clamped, the screw a is Fig. 1. the insulator consists of the made to screw into the body as far the radii center point line of the bore N, by continuing the threading of the open r r c on the inner sides of the bore N, so engage the threading of the screw c as l r as the center point line of the bore iii. Us driving in or drivin out the screw a, the wireway designated y w, is diminished or enlarged at will.

The wires which are designated by it Fig. 2, are shdw-n insulated, and are inten connected at the joint desi 'nated c, t joint being made by solder after which. the insulator is placed ov joint by driving in the W a, th lation of the various wires are force to ethe tight against the Wall 0 tube, and clamped securely in. posit. n1.

Ibis evident that theshape the tube is a not confined to the form. shown bnt may be square, or other shape, without departing from the boundaries of my invention.

1 claim as my invention:

11 insulator of hard insulating mater-i L, consisting of a hollow tube having one end open and the other end completely closed up by an end Wall, a threaded opening in the wall of the body close to the open end, at right angles with and of the diarn ter as the here of the tube, the threadir .ing continued through the l... on n ner surface of the here, a l m the diameter of t bore, a oiihard insnlatii tip, and top, fitted loosely in threaded opening, to clamp a group of v between the screw tip and the inner suriace or" the tube.

In testimony whereof, I, ALEXANDER H. Siiurson have signed my name to this specification in the presence of two subscribing witnesses, this fourth day of May 1M6.

ALEXANDER E. SIMPSG'N. V'Jitnesses:

Fnnnr: T. P. Simrson, Meneiinritern Canaan, i 

